알고 보니 그런 뜻이었어요 — So that's what it meant — culture gaps and misunderstandings

알고 보니 그런 뜻이었어요 — So that's what it meant — culture gaps and misunderstandings. Lesson 3 of Level 4B in the Haeyo Korean regular course.

What you will be able to do

Tell someone what you saw, heard or felt yourself with -더라고(요), and what you found already done with -았/었더라고요: 한국 카페는 밤 열한 시까지 문을 여는 곳이 많더라고요. · 가 보니까 자리가 벌써 다 찼더라고요.
Share what you saw with a friend in casual speech with -더라, and ask yourself out loud when something slips your mind with -더라?: 리사 씨 영상 정말 재미있더라. · 그 식당 이름이 뭐더라?
Say that there are (almost) no exceptions with N치고, or that something is not what you'd expect with N치고는 — and know when it can sound like a backhanded compliment: 아이치고 과자를 싫어하는 아이는 별로 없어요. · 4월치고는 날씨가 정말 덥네요.
Show how you can tell, in written Korean, with -다는 것은 N에서/N(으)로 알 수 있다: 한국 사람들이 나이를 중요하게 생각한다는 것은 호칭에서 알 수 있다.

A/V-더라고(요) — I noticed … · it turned out … — telling someone what you saw or found out yourself
A/V-더라 · -더라? — it was … (casual) · what was it again? — recalling out loud
N치고 · N치고는 — every … almost without exception · for a … — what's typical, and what's surprising
A-다는 것은 N에서/N(으)로 알 수 있다 — you can tell … from … — giving evidence in written Korean